1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*-------------------------------------------------------------------------
* Copyright (C) 1997 National Center for Supercomputing Applications.
* All rights reserved.
*
*-------------------------------------------------------------------------
*
* Created: H5Gprivate.h
* Jul 11 1997
* Robb Matzke <matzke@llnl.gov>
*
* Purpose: Library-visible declarations.
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
#ifndef _H5Gprivate_H
#define _H5Gprivate_H
#include <H5Gpublic.h>
/* Private headers needed by this file */
#include <H5private.h>
#include <H5Bprivate.h>
#include <H5Fprivate.h>
/*
* Define this to enable debugging.
*/
#ifdef NDEBUG
# undef H5G_DEBUG
#endif
#define H5G_NODE_MAGIC "SNOD" /*symbol table node magic number */
#define H5G_NODE_SIZEOF_MAGIC 4 /*sizeof symbol node magic number */
#define H5G_NO_CHANGE (-1) /*see H5G_ent_modified() */
#define H5G_NLINKS 16 /*max symlinks to follow per lookup */
/*
* The disk size for a symbol table entry...
*/
#define H5G_SIZEOF_SCRATCH 24
#define H5G_SIZEOF_ENTRY(F) \
(H5F_SIZEOF_SIZE(F) + /*offset of name into heap */ \
H5F_SIZEOF_ADDR(F) + /*address of object header */ \
4 + /*entry type */ \
H5G_SIZEOF_SCRATCH) /*scratch pad space */
/*
* Various types of object header information can be cached in a symbol
* table entry (it's normal home is the object header to which the entry
* points). This datatype determines what (if anything) is cached in the
* symbol table entry.
*/
typedef enum H5G_type_t {
H5G_CACHED_ERROR = -1, /*force enum to be signed */
H5G_NOTHING_CACHED = 0, /*nothing is cached, must be 0 */
H5G_CACHED_STAB = 1, /*symbol table, `stab' */
H5G_CACHED_SLINK = 2, /*symbolic link */
H5G_NCACHED = 3 /*THIS MUST BE LAST */
} H5G_type_t;
/*
* A symbol table entry caches these parameters from object header
* messages... The values are entered into the symbol table when an object
* header is created (by hand) and are extracted from the symbol table with a
* callback function registered in H5O_init_interface(). Be sure to update
* H5G_ent_decode(), H5G_ent_encode(), and H5G_ent_debug() as well.
*/
typedef union H5G_cache_t {
struct {
haddr_t btree_addr; /*file address of symbol table B-tree*/
haddr_t heap_addr; /*file address of stab name heap */
} stab;
struct {
size_t lval_offset; /*link value offset */
} slink;
} H5G_cache_t;
/*
* A symbol table entry. The two important fields are `name_off' and
* `header'. The remaining fields are used for caching information that
* also appears in the object header to which this symbol table entry
* points.
*/
typedef struct H5G_entry_t {
hbool_t dirty; /*entry out-of-date? */
size_t name_off; /*offset of name within name heap */
haddr_t header; /*file address of object header */
H5G_type_t type; /*type of information cached */
H5G_cache_t cache; /*cached data from object header */
H5F_t *file; /*file to which this obj hdr belongs */
} H5G_entry_t;
typedef struct H5G_t H5G_t;
/*
* Library prototypes... These are the ones that other packages routinely
* call.
*/
H5G_t *H5G_loc (hid_t loc_id);
herr_t H5G_mkroot (H5F_t *f, H5G_entry_t *root_entry);
H5G_entry_t *H5G_entof (H5G_t *grp);
H5F_t *H5G_fileof (H5G_t *grp);
H5G_t *H5G_create (H5G_t *loc, const char *name, size_t size_hint);
H5G_t *H5G_open (H5G_t *loc, const char *name);
H5G_t *H5G_reopen (H5G_t *grp);
herr_t H5G_close (H5G_t *grp);
herr_t H5G_set (H5G_t *grp);
herr_t H5G_push (H5G_t *grp);
herr_t H5G_pop (H5F_t *f);
H5G_t *H5G_getcwg(H5F_t *f);
herr_t H5G_link (H5G_t *loc, H5G_link_t type, const char *cur_name,
const char *new_name);
herr_t H5G_stat (H5G_t *loc, const char *name, hbool_t follow_link,
H5G_stat_t *statbuf/*out*/);
herr_t H5G_linkval (H5G_t *loc, const char *name, size_t size,
char *buf/*out*/);
herr_t H5G_insert (H5G_t *cwg, const char *name, H5G_entry_t *ent);
herr_t H5G_find (H5G_t *cwg, const char *name, H5G_entry_t *grp_ent/*out*/,
H5G_entry_t *ent/*out*/);
herr_t H5G_traverse_slink (H5G_entry_t *grp_ent/*in,out*/,
H5G_entry_t *obj_ent/*in,out*/,
intn *nlinks/*in,out*/);
herr_t H5G_ent_encode (H5F_t *f, uint8 **pp, const H5G_entry_t *ent);
herr_t H5G_ent_decode (H5F_t *f, const uint8 **pp, H5G_entry_t *ent/*out*/);
/*
* These functions operate on symbol table nodes.
*/
herr_t H5G_node_debug (H5F_t *f, const haddr_t *addr, FILE * stream,
intn indent, intn fwidth, const haddr_t *heap);
/*
* These functions operate on symbol table entries. They're used primarily
* in the H5O package where header messages are cached in symbol table
* entries. The subclasses of H5O probably don't need them though.
*/
H5G_cache_t *H5G_ent_cache (H5G_entry_t *ent, H5G_type_t *cache_type);
herr_t H5G_ent_modified (H5G_entry_t *ent, H5G_type_t cache_type);
herr_t H5G_ent_debug (H5F_t *f, const H5G_entry_t *ent, FILE * stream,
intn indent, intn fwidth, const haddr_t *heap);
#endif
|
